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E36 /7 Z3 (1996-2002)
E36/7 Z3 roadster and coupe talk with our gurus here.

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  #1  
Old 08-25-2012, 05:51 AM
WhseMark WhseMark is offline
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Location: Whitehorse, YT
 
Join Date: Aug 2012
Posts: 22
Mein Auto: 1997 Z3, 2005 Lincoln LS
Adding auxillary power socket

Hey all. I'm in need of adding additional power for my sat radio, etc.
I have been thinking of where the best place to draw clean power from.I have tried the stock lighter socket but it puts out a helluva lot of alternator whine. I was thinking of tapping the switched powee line from the radio as it producs no whine. Any recomendations?
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  #2  
Old 08-25-2012, 08:31 AM
Blacklane Blacklane is offline
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Location: Springfield, Ohio, USA
 
Join Date: Jun 2011
Posts: 882
Mein Auto: 1998 Z3 Roadster
Why do you think it produces no whine? Radios have internal filters to help block the whine. I don't think you will find any less on that wire.

I would install a noise filter somewhere behind the console and wire your lighter to that.

There are many available from different suppliers such as this one:
http://www.parts-express.com/pe/show...number=266-001
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Old 08-25-2012, 01:47 PM
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Pinecone Pinecone is offline
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Location: Maryland
 
Join Date: Apr 2002
Posts: 10,482
Mein Auto: M Roadster/M3
All the power comes from the same source.

If you are getting that much whine, you need to check the alternator.
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